| Language: | English |
|---|---|
| Type: | Article |
| Authors: | Hiroyuki Kitahata, Ryoichi Aihara, Nobuyuki Magome and Kenichi Yoshikawa |
| Journal: | Journal of Chemical Physics |
| ISSN: | 0021-9606 |
| Volume: | 116 |
| Number: | 13 |
| Month: | 4 |
| Year: | 2002 |
| Actual year: | 2002 |
| Pages: | 5666-5672 |
| doi: | 10.1063/1.1456023 |
| Abstract: | The generation of convective flow by a chemical wave was studied experimentally on a mm-sized droplet of Belousov-Zhabotinsky (BZ) reaction medium. A propagating chemical wave causes a transient increase in interfacial tension, and this local change in interfacial tension induces convection. The observed flow profile was reproduced with a numerical simulation by introducing the transient increase in interfacial tension to a modified Navier-Stokes equation coupled with a chemical kinetic equation; a modified Oregonator. We also observed the periodic motion of a BZ droplet floating on an oil phase. Such periodic motion is attributed to the rhythmic change in interfacial tension. The observed periodic convective motion coupled with a chemical reaction is discussed in relation to chemo-mechanical energy transduction under isothermal conditions. (C) 2002 American Institute of Physics. |
Hiroyuki Kitahata, Ryoichi Aihara, Nobuyuki Magome and Kenichi Yoshikawa, Journal of Chemical Physics, 116, 5666-5672 (2002)